void read_file()    //读取最高记录
{
    FILE* fp;
    fp = fopen("俄罗斯方块记录.txt", "r+");
    if (fp == NULL)
    {
        fp = fopen("俄罗斯方块记录.txt", "w+");
        fwrite(&max, sizeof(int), 1, fp);
    }
    fseek(fp, 0, 0);
    fread(&max, sizeof(int), 1, fp);
    fclose(fp);
}
